Engine Oil Pressure Sensor and/or Switch Replacement for Pontiac Grand Prix 1999

1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
2. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.



3. Disconnect the electrical connector from the engine oil pressure sensor.
4. Remove the engine oil pressure sensor.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

1. Install the engine oil pressure sensor.

Tighten
The oil pressure sensor to 16 N·m (140. lb in).

2. Connect the electrical connector to the engine oil pressure sensor.
3. Lower the vehicle.
4. Reconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.